underground storage tank removal report ut-44 - Dtsc-ssfl.com

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Racketdyne Division Rockwell international Corporation 6633 Canoga Avenue Canoga Park. California 9130 3 Telex : 698478 ROCKETOYN CNPK Rockwell CERTIFIED - RETURN RECEIPT REQUESTE D 29 November 1989 In reply refer to 89RC1453 8 Resource Management Agency . County of Ventura Environmental Health Department 800 South Victoria Avenue Ventura, CA 9300 9 Attention : Mr . Kevin Tinsle y Subject : Santa Susana Field Laboratory Underground Tank Status Gentlemen : Pursuant to your request in your letter dated 1 November 1989, Rockwell international Corporation, Rocketdyne Division (Rocketdyne) submits the following outline of additional information on Santa Susana Fiel d Laboratory underground tanks : 1 . A total of five'underground tanks have been removed from Building 055 . On 21 February 1986 a 1,000 gallon diesel fuel tank was removed under a Ventura County Environmental Health Department (VCEHO) permit . Upon removal it was observed that there were hole s in the tank and an uncontrolled release had'occurred . Initial samples indicated contamination of 1 .1 to 1 .3 percent diesel fuel by weight . After remedial-work was performed samples collected indicated results ranging from 0 .001 to 0 .006 percent diesel fuel by weight . Approximately 45 yards of contaminated soil was transported to Casmalia for landfill on 21 May 1986 . The additional four underground tanks were radioactive waste holdup tanks of 1 :85, 230 and two 1,000 gallons in size . These tanks were removed with the decommissioning of the interim status Nuclear Material Development Facility (NMDF) . With the concurrence of the U .S . Nuclear Regulatory Commission the license for the facility was terminated and the area released for unrestricted use . No additional tanks have been found to exist at Building 055 . (See Enclosure 1 ) 2 . On 2 October 1986 a 500 gallon diesel fuel tank was removed under VCEHD permit #424 at Building 020 . Initial samples indicated contamination of 0 .3 percent diesel fuel by weight . Remedial work . . . . . . . . . . . . . . .was. . .performed .. . . . .A . .c.1 .ean_closure . .was. ..determined . . . . . . . The . . . . . . . . . County . . . . . was present during the tank abandonment . On 20 and 29 October 1986, .4 . . . cubic yards of'soil contaminated with diesel fuel was transported to Casmalia for landfill . (See Enclosure 2) ATTACHMENT E HDMSe00024174
89RC1453 8 29 November 198 9 Page 2 3 . The following is an outline for the abandoiument of 14 tanks unde r VCEHO permit #698/#986 : Tank Bldg Date Removed Photos Analysis Results Statu s 201 204 7 Nov 88 yes yes Contaminated Ongoing 4 202 204 1 Jul 88 yes no3 Clean Backfil l 203 204 29 Sep 88 yes yes Contaminated Ongoing " 204 207 1 Jul 88 yes no3 Clean Backfil l 205 207 no X101 300 26 Aug 87 yes yes Clean Backfil l 102L1 324 26 Aug 87 yes yes Contaminated Backfill s 103 301 26 Aug B, 7 yes yes Clean Backfil l -104 301 31 Aug 87 yes yes Clean Backfil l 207 206 31 Aug 87 yes no3 Clean Backfi l l-. 401 009 31 Aug 87 yes yes Contaminated Remediated / Backf i l l ' 403 005" 31 Aug 87 yes yes Contaminated Backfi11 6 301 CTL-III 31 Aug 87 yes no' Clean Backf il l 302 CTL- III 2 n o FOOTNOTES - Tank 204 at B/207 was found to be a septic tank and not removed as an underground fuel tank . 2 Permit #698 was filed in respect to facility design maps, therefore due to incorrect drawings the total tank count at the CTL-III facility was misrepresented and only one tank was removed . a Analysis for tanks 202, 204, 207, and 301 were not required per Ventura County Environmental Health Department inspector at the time of removal. - 4 The remedial work for tanks 201 and 203 is currently in progres s _ . . . . . .. . . . . .in- accordance with" the- Ventura- County -LUFT .program. . . . . Any.questi .ons. . . . . . . . .. regarding the work performed should be referred to files C8817 1 and C88115 . HDMSe00024175
Page 1 and 2: UNDERGROUND STORAGE TANK REMOVAL RE
Page 3 and 4: ENVIRONMENTAL HtA[.I n V ~r~ . .,-.
Page 5 and 6: 4 0 403 APPROXIMATE LOCATION OP FOR
Page 7: TO : Ron Jensen & J . Matsushita FR
Page 11: HDMSe00024177

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